Teac CT-F689, Service Manual

Page: 53 / 60

(curve of
volume
control)
--------- VOL05 is the volume output level at 5%
VOL25 is the volume output level at 25%
Remark: The value of VOL05 and VOL25 was
not suggested to vary in every set. It is
suggested to use the default value.
13 White balance
adjustment
(key 1)
R CUT (6B)
G CUT (9E)
B CUT (7C)
G DRV (39)
B DRV (35)
Black and white
pattern (PAL)
1. Measure the dark side of the picture with a
color analyzer and set RCUT to 80. Then
adjust BCUT and GCUT until the data on
the analyzer become x = 284, y = 299.
2. Measure the bright side of the picture,
Then adjust BDRV and GDRV until the
data on the analyzer become x = 284, y =
299.
3. Repeat step 1 and 2 until you get right
color on both dark and bright side of the
screen.
Other adjustment (default value was suggested, except BRTC)
8 Key 0 OSD (0A)
TXCX (30)
RGCN (20)
TNTX (25)
TNTN (32)
FMMODE (13)
DKFMMD (20)
---------- OSD – OSD position
TXCX – OSD intensity when maximum
contrast
RGCN – OSD intensity when minimum
contrast
TNTX – maximum tint level
TNTN – minimum tint level
FMMODE – frequency shift for FM (mono)
mode, only useful for NICAM
model
DKFMMD - frequency shift for DK NICAM
mode
9 Key 8 SCNT (0F)
CNTX (3F)
CNTN (00)
BRTX (20)
BRTN (25)
COLX (35)
COLN (00)
---------- SCNT – sub contrast for luminance signal
CNTX – maximum contrast
CNTN – minimum contrast
BRTX – maximum brightness
BRTN – minimum brightness
COLX – maximum color
COLN – minimum color
10 Key 9 CNTC (22)
BRTC (37)
COLC (50)
TNTC (35)
COLP (00)
COLS (54)
BRTS (00)
---------- CNTC – 50% contrast
BRTC – 50% brightness
COLC – 50% color
TNTC – 50% tint
COLP – color level for PAL
COLS – color level for SECAM
BRTS – sub brightness for SECAM
For the adjustment of BRTC, receive an 8
step grey scale pattern and adjust all
picture settings to 50%. Then adjust BRTC
until the first and second step on the screen
can just be distinguished.